| Schedule of financial assets and financial liabilities measured at fair value on a recurring basis | 
| (Dollars in Thousands) | 
 | 
Level 1 | 
 | 
Level 2 | 
 | 
Level 3 | 
 | 
Total Fair | 
 
| Inputs | 
Inputs | 
Inputs | 
Value | 
 
| 2019 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Securities Available for Sale: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government Treasury | 
 | 
$ | 
232,778 | 
 | 
$ | 
- | 
 | 
$ | 
- | 
 | 
$ | 
232,778 | 
 
| U.S. Government Agency | 
 | 
 | 
- | 
 | 
 | 
156,078 | 
 | 
 | 
- | 
 | 
 | 
156,078 | 
 
| States and Political Subdivisions | 
 | 
 | 
- | 
 | 
 | 
6,319 | 
 | 
 | 
- | 
 | 
 | 
6,319 | 
 
| Mortgage-Backed Securities | 
 | 
 | 
- | 
 | 
 | 
773 | 
 | 
 | 
- | 
 | 
 | 
773 | 
 
| Equity Securities | 
 | 
 | 
- | 
 | 
 | 
7,653 | 
 | 
 | 
- | 
 | 
 | 
7,653 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| 2018 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Securities Available for Sale: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government Treasury | 
 | 
$ | 
261,849 | 
 | 
$ | 
- | 
 | 
$ | 
- | 
 | 
$ | 
261,849 | 
 
| U.S. Government Agency | 
 | 
 | 
- | 
 | 
 | 
133,206 | 
 | 
 | 
- | 
 | 
 | 
133,206 | 
 
| State and Political Subdivisions | 
 | 
 | 
- | 
 | 
 | 
42,365 | 
 | 
 | 
- | 
 | 
 | 
42,365 | 
 
| Mortgage-Backed Securities | 
 | 
 | 
- | 
 | 
 | 
943 | 
 | 
 | 
- | 
 | 
 | 
943 | 
 
| Equity Securities | 
 | 
 | 
- | 
 | 
 | 
7,794 | 
 | 
 | 
- | 
 | 
 | 
7,794 | 
 
  
 | 
| Schedule of financial instruments with estimated fair values | 
 | 
 | 
2019 | 
 
| (Dollars in Thousands) | 
 | 
Carrying | 
 | 
Level 1 | 
 | 
Level 2 | 
 | 
Level 3 | 
 
| Value | 
Inputs | 
Inputs | 
Inputs | 
 
| ASSETS: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Cash | 
 | 
$ | 
60,087 | 
 | 
$ | 
60,087 | 
 | 
$ | 
- | 
 | 
$ | 
- | 
 
| Short-Term Investments | 
 | 
 | 
318,336 | 
 | 
 | 
318,336 | 
 | 
 | 
- | 
 | 
 | 
- | 
 
| Investment Securities, Available for Sale | 
 | 
 | 
403,601 | 
 | 
 | 
232,778 | 
 | 
 | 
170,823 | 
 | 
 | 
- | 
 
| Investment Securities, Held to Maturity | 
 | 
 | 
239,539 | 
 | 
 | 
20,042 | 
 | 
 | 
221,387 | 
 | 
 | 
- | 
 
| Loans Held for Sale | 
 | 
 | 
9,509 | 
 | 
 | 
- | 
 | 
 | 
9,509 | 
 | 
 | 
- | 
 
| 
Equity Securities(1)
 | 
 | 
 | 
3,591 | 
 | 
 | 
- | 
 | 
 | 
3,591 | 
 | 
 | 
- | 
 
| Loans, Net of Allowance for Loan Losses | 
 | 
 | 
1,822,024 | 
 | 
 | 
- | 
 | 
 | 
- | 
 | 
 | 
1,804,930 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| LIABILITIES: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Deposits | 
 | 
$ | 
2,645,454 | 
 | 
$ | 
- | 
 | 
$ | 
2,644,430 | 
 | 
$ | 
- | 
 
| Short-Term Borrowings | 
 | 
 | 
6,404 | 
 | 
 | 
- | 
 | 
 | 
6,404 | 
 | 
 | 
- | 
 
| Subordinated Notes Payable | 
 | 
 | 
52,887 | 
 | 
 | 
- | 
 | 
 | 
40,280 | 
 | 
 | 
- | 
 
| Long-Term Borrowings | 
 | 
 | 
6,514 | 
 | 
 | 
- | 
 | 
 | 
6,623 | 
 | 
 | 
- | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| 
(1) Not readily marketable securities are reflected in other assets.
 |  
  
 | 
 | 
2018 | 
 
| (Dollars in Thousands) | 
 | 
Carrying | 
 | 
Level 1 | 
 | 
Level 2 | 
 | 
Level 3 | 
 
| Value | 
Inputs | 
Inputs | 
Inputs | 
 
| ASSETS: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Cash | 
 | 
$ | 
62,032 | 
 | 
$ | 
62,032 | 
 | 
$ | 
- | 
 | 
$ | 
- | 
 
| Short-Term Investments | 
 | 
 | 
213,968 | 
 | 
 | 
213,968 | 
 | 
 | 
- | 
 | 
 | 
- | 
 
| Investment Securities, Available for Sale | 
 | 
 | 
446,157 | 
 | 
 | 
261,849 | 
 | 
 | 
184,308 | 
 | 
 | 
- | 
 
| Investment Securities, Held to Maturity | 
 | 
 | 
217,320 | 
 | 
 | 
34,611 | 
 | 
 | 
179,802 | 
 | 
 | 
- | 
 
| Loans Held for Sale | 
 | 
 | 
6,869 | 
 | 
 | 
- | 
 | 
 | 
6,869 | 
 | 
 | 
- | 
 
| Other Equity Securities | 
 | 
 | 
3,591 | 
 | 
 | 
- | 
 | 
 | 
3,591 | 
 | 
 | 
- | 
 
| Loans, Net of Allowance for Loan Losses | 
 | 
 | 
1,760,015 | 
 | 
 | 
- | 
 | 
 | 
- | 
 | 
 | 
1,730,161 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| LIABILITIES: | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Deposits | 
 | 
$ | 
2,531,856 | 
 | 
$ | 
- | 
 | 
$ | 
2,529,841 | 
 | 
$ | 
- | 
 
| Short-Term Borrowings | 
 | 
 | 
13,541 | 
 | 
 | 
- | 
 | 
 | 
13,541 | 
 | 
 | 
- | 
 
| Subordinated Notes Payable | 
 | 
 | 
52,887 | 
 | 
 | 
- | 
 | 
 | 
42,359 | 
 | 
 | 
- | 
 
| Long-Term Borrowings | 
 | 
 | 
8,568 | 
 | 
 | 
- | 
 | 
 | 
7,879 | 
 | 
 | 
- | 
 
  
 |